| A | B |
|---|
| ozone molecules | has 3 oxygen atoms |
| ultraviolet radiation | blocked by ozone |
| stratosphere | location of the ozone layer |
| depletion | to seriously decrease the total amount |
| chlorofluorocarbon (CFC) | refrigeration chemical that destroys ozone |
| example of a CFC | Freon |
| caused by UV radiation | mutation of cells |
| ozone hole | located over Antarctica |
| source of CFCs | old refridgerators and wrecked cars |
| sunscreen | protection from UV radiation |
| heat energy | generated by breaking apart ozone molecules |
| seasons | cause of natural fluctuating ozone levels |
